diff --git a/CHANGELOG.md b/CHANGELOG.md
index 147e4fb..c659ab9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# 2019-02-16
+- Migrated to net core v.3.1
+- Added bit operation utils
 # 2019-12-15
 - Added support for ArraySegment (thanks ksmith3036)
 # 2018-03-11
diff --git a/nuget.props b/nuget.props
index bcc7023..a2f7f8a 100644
--- a/nuget.props
+++ b/nuget.props
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <PackageId>Standart.Hash.xxHash</PackageId>
-    <VersionPrefix>1.0.7</VersionPrefix>
+    <VersionPrefix>3.1.0</VersionPrefix>
     <AssemblyName>Standart.Hash.xxHash</AssemblyName>
     <AssemblyTitle>Standart.Hash.xxHash</AssemblyTitle>
     <Authors>Alexander Melnik</Authors>